ip multicast-routingRelated Configuration TasksThe following are related PIM-SM configuration tasks.• Configuring S,G Expiry Timers• Configuring a Static Rendezvous Point• Configuring a Designated Router• Creating Multicast Boundaries and DomainsEnable PIM-SMYou must enable PIM-SM on each participating interface.1 Enable multicast routing on the system.CONFIGURATION modeip multicast-routing2 Enable PIM-Sparse mode.INTERFACE modeip pim sparse-modeExamples of Viewing PIM-SM InformationTo display which interfaces are enabled with PIM-SM, use the show ip pim interface command from EXEC Privilege mode.Dell#show ip pim interfaceAddress Interface Ver/ Nbr Query DR DRMode Count Intvl Prio165.87.34.5 Te 1/10 v2/S 0 30 1 165.87.34.510.1.1.2 Vl 10 v2/S 1 30 1 10.1.1.220.1.1.5 Vl 20 v2/S 1 30 1 20.1.1.5165.87.31.200 Vl 30 v2/S 1 30 1 165.87.31.201NOTE: You can influence the selection of the Rendezvous Point by enabling PIM-Sparse mode on a Loopback interface andassigning a low IP address.To display PIM neighbors for each interface, use the show ip pim neighbor command EXEC Privilege mode.Dell#show ip pim neighborNeighbor Interface Uptime/Expires Ver DRAddress Prio/Mode127.87.5.5 Te 1/11 01:44:59/00:01:16 v2 1 / S127.87.3.5 Te 1/12 01:45:00/00:01:16 v2 1 / DR127.87.50.5 Te 2/13 00:03:08/00:01:37 v2 1 / SDell#To display the PIM routing table, use the show ip pim tib command from EXEC privilege mode.Dell#show ip pim tibPIM Multicast Routing TableFlags: D - Dense, S - Sparse, C - Connected, L - Local, P - Pruned,R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT,Timers: Uptime/ExpiresInterface state: Interface, next-Hop, State/Mode(*, 192.1.2.1), uptime 00:29:36, expires 00:03:26, RP 10.87.2.6, flags: SCJIncoming interface: TenGigabitEthernet 1/12, RPF neighbor 10.87.3.5684 PIM Sparse-Mode (PIM-SM)
